Plate-clamp for printing-presses.



NTHIG PRESSBS.

APPLIOATION FILED MAY 31, 1913.

Patented F6102, 1915.

w N! q I W W or llili'llll To all whom if; may concem the county sf $013k, t e

m? filinms, we mv m'zefi cerium 1 w m1 159%; vemeilts 'm Flaw- C i 01 :5 of which the 5 is on referenca being: 112d. t me 31151 has for "new and. im r V251 arrange- I iamping amass for $2211 In yr n bing pi ate u aop. press; Maire pmmicuiariy, this inven'iic-n i0 mfgvision 0" 2" an im'p'rovev. \urimg 011% erlges the 3 92 aims A 631 BC JUIIZ /PLiR-fOHY O1 TQGYQ 511011 cus borimr'y ta secure f-Wes of. 3; cylinder 02*. t is type t we pixies :11; t e athar end 0?. T; plaias at each an i being 0i 2 fixed clamp the 25 t 0% the cylinier, a siii'iabifi clamp which 1s iaosei lntergss'ani ns'aiwfiem iiiab'ie tbs inner 5mm outer plates, im &

*" we cyhndsr' cia-mps the and c:

to be mowd io'rcibiy inz-e angagemam 'Wiilfi the outer ed gas of s-Em 51216. "mchafi in such gosh-flan, thus Securing both the, and cuter as 2011x215 p05 Srien. is; custom 7 i1 3 pmv'id a such a,

cylind r with W70 pmfi cirm iemntia lly of ifs-" 2 nylinder, 2115 two plat-es feraleaked in positi'sn iaflwpemizmfiy he fishes? We {312x825 abreast upen firs ather mmumferentisuli half 03' mm and 53min 1&- as a insides are c is it is 13m 52s 'xm mtmn to 32x11; 0111 the cyliam fish "i8 band 01 the 'perymn'sm making a;

tightly enough 00 110161 plate. tem'gimml-il'y in pssition, hich 01 np shall ofree to move middie 12: 5 fine cyiinfier w damp pin "by was abreast thereon in the 01d way Wn 1 clam?)- ing rim-mas opa:

it is mic-finer abject prove damping means my invention H 01, Lhlb Q96 in pamted ant.

, means; by 11% agcmnpiishe. 1.: 4:. V mes mucous 3 :11 the drawn 26611385 313 dessribs in ike 3,

ibpfevaci 53 5 am of mam; Fig. 2 an man a-urged detail longitudinal ass-e 10.11 through. one 03' my improve clampsancz through +318 portinns 3f the cyim' er adjacent th'are'to, being snbsi-mtia :2 ged. sectiun on line of Fig": Ur; Fig is an enlm'ged a'ntiail'j the cylinder upon Fig. & a perspe 3 detail. being Sakai 1% cross-secwn 1 01% the *thrcugh we tive View 0* mass; 121:; improveai clamps.

Rei ning several iwures bf the drawings m which corresponmg parts are andlcaied by thm refemnce characters, mama-fies a cyimder goumaie 151 any suit-able framewsrk zby means of hubs 11 wcurea by means @"2 gpaiies l2 ccncentz. c=

611 s min, as west flistance fie-gums; c330: "mfieremiaily 0 fiche-2 1131532" ":mm the strips 1&- n: 1% other Earl 0'? i i 1% cylmiiem him 511% embcfiiment 0 imprsvements dmwmgs in 'Fnicu fibers are am siiimbie e'ia nps interposeci be aatil We inner sum. plates pinae damping mecha plates is provided with my improved. temporary clamping means, but in the construction shown I have applied such improvements to one of the two clamps adapted to bear-nearer the center of each plate circumferentially thereof;

17 indicates the inner the cylinder and. 18 indicates the. outer plates thereon, the inner plates 17 being secured between the clamping ring 13 and the slidable clamps 15-16, and the outer plates 18 I being secured between the slidable clamps 1516 and slidable clamps 19, of the ordinary type screw-threaded upon rods 20 revformed integrally with olubly mounted in slidable heads 21 which are adapted to be moved inward with the rods 20 and the clamps 19 bymeans of an eccentric 22 of the well-known type, or in any other suitable manner. Inasmuch as the parts heretofore referred to are wellknownin the art and form no part of themselves of my invention,other than the improved clamp 15 of course,-'-it is believed that it will not be necessary to describe these parts further herein.

Coming now to a description of the clamp 15, 23 indicates the beveled head of said clamp, in the construction shown being thereof which slides in the usual groove 25 in the surface of the cylinder, being held slidably in said slot by the usual flanges 26. 27 indicates a groove in the body of the elamp15 in which is pivotally mounted, by means of a pivot pin 28, a dog 29, the inner end of which is serrated or toothed as shown in Fig. 2. v 30 indicates a pin screw-threaded in an opening 31 in the body of the clamp in such position that its inner beveled end is adapted to be screwed down into engagement with the outer end of the dog 29 by means of a wrench or other suitable tool 31 inserted in the outer end of said pin. As will be readily understood, by screwing the pin 30 inward the dog 29 is caused to move in clockwise direction as shown in Fig. 2-, bringing the teeth at theinner end of said dog into engagement with the inner face of the .groove 25, serving to lock theclamp 15 against movement to the left in Fig. 2. It will be understood. however, that the dog 29 is free to swing still farther in clockwise direction clamping means, are obtained from the stereoty mg room plates mounted upon the body portion 24 to permit the clamp 15 to move to the right in said figure.-

With a press equipped with my improved as soon as the inside plates they are placed in position upon t e cylinder an temporarily through the medium of the clamp 15, the pressmen being able to rotate the cylinder with one of the plates 17 clamped in position thereon by means of the clamp 15, in

order to place the other plates 17 successively in position, without danger of such temporarilyclamped plates becoming loosened or disarranged thereon. Thereafter when the outer plates are obtained from the stereotyping room the, pressmen are able to complete the permanent clamping of the plates upon the press in an appreciably shorter time than they would be able to accomplish this task without the use of my im proved clamps.

The movement of the clamps 15 toward the clamping ring 13, without a loosening of the pin 30 is readily accomplished by reason of the fact that the dog 29 in temporary clanipingposition stands in a posi tion inclined beyond the center of the pivot pin, 28. I do not, however,'rcstrict myself to this detail of construction except hereinafter specifically claimed. 1

While I have shown the clamp 15 as be ing capable of being temporarily locked against movement toward the end of the cylinder and away from the clamping ring 13, and while that is apparently the preferable form of construction as plate clamping mechanisms are now arranged, I do not restrict myself to this particular arrangement of the clamp 15 except as hereinafter specifically claimed, the essential'point being that the clamp is capable of temporarily locking one of the plates in position prior to the final permanent locking of the plates.

It will be understood that in the specification and claims I use the term permanent" locking to denote the locking of the plates for operation of the machine in contradictinction to the temporary locking by means of the clamps 15, and that I do not mean thereby that the plates are adapted to be secured upon theplate support for any particular length of time.

What I claim as mv invention and desire to secure by Letters Patent is 1. The combination of a plate cylinder having a longitudinally-extending groove, a plate clamp mounted in said groove and slidable freely in either direction therealong, locking means adapted to engage one of the longitudinally-extending walls of said groove for holding said clamp against movement in one'direction while still permitting movement thereofin the opposite direction, and positively-acting means adapted to em locked in such position seici iockiiig means for moving it operative position.

2. The combination of o piote o /iin iizivi g :1 iongitiidinally-extending groove, 21 pinto-0121111., mount d in said groove and slid-able freely in either direction thereziio locking means adapted to be projected into engagement with one of the igituiil12tii7- extending wzi'iis said groove for holding to Si '1. damp against movement in one direction whiie stiii permitting movementther of the opposite direction, and o. pita. he. 1i sorewthreecied mounting in saicinoiomg adapted to engage said locking means moving it into operative position.

3. The combination of a piate cylinder having a. iongitufinally-extending groove,

plate ciomp meunted in said groove and. slid-able freeiy in either direction there-along,

and rotatabiy-1noiu1ted locking means adoptto be brought bf, a. partial rotwio' engagement with said goove at on point thereaiong for holding the clamp no 'eidingiy against movement in one dire-o tion WhiiB stiii permitting movement there of in the opposite direction.

4. The combination of a piate cylinder having a iongitudinaily-extending groove, a plate clamp mounted in said grooveand siiciablo freely in either direction thereaiong, rotatz biy-mounted locking means carried by said clamp adapted to be brought a partial rotation into engagement W11 said groove at any desired point tiiereiiiong or holding the clamp against movement in one directioii Whiie still permitting more mont thereof in the opposite direction, and. 'positiveiy acting means carried soiC. clamp for giving Said locking means partial rotation into operative locking position.

5. The combination of a plate cylinder having a iongitudinaiiy-extending groove, a. plate clamp mounted in said groove and siidable freeiyin either direction thereaiong mtutabiy-mounted locking means carried by 'said clamp adapted to be brought by 9. our- :10; pii'otaii mom t upon szii-ii a. on screw remioii Iii 03ml}; edo'p tiai rotation into engagement with gioovc at any desired point thereahmg for iioiciii th 'rin'm against movement one '1' stiis vermitti moveiiieot ti) o mosite diroctio and 11-pin i1- ied mounting in s; (ifllflp go said rotsito' mounted loci operative po.

6. The (10111 :i iongitmii ng means moving it operative out the oyiiiider 1. mo'vemeot 1011; one direction.

hold ng said clam uii saiti groove in cylinder iizivin groove, a pi 111 said a. iongle eiinnp siid :1

to swing said projecting e: in i on ngement of the waiis of: the groove in the cylinder to hoid chimp against movementin one direction.

8. The so liiiiili iiiil of a cylinder having a. iong'itmiin: iy-exten iing {groove 21 pints ci -lamp siic inbiy mounted iii said 'zroove, a dog pii'otziiiy inountei upon. said chimp, and 0. pin screw-thren ie6 in said clamp iapteii to swing said dog on its pivot to bring its pro ecting; (and. into engagement with one of he 'WfliiS of the groove in the oyiincler to hold. said 2 map against movement inoztie (Erection, said dog adapted. to mow: stiii further in the (iirootion it is forced by said screw-threaded iii whereby said ciamp is permittoci i3. movement in one direction.

N LLiAii I EV 

